46295 + Interview Questions in Chemistry

1.	The difference between orbital angular momentum of an electron in a 4f orbital and another electron in a 4s orbital is:
Answer» The difference between orbital angular momentum of an electron in a $4 f$ orbital and another electron in a $4 s$ orbital is:

Discussion

2.	Heat of hydrogenation is minimum for:
Answer» Heat of hydrogenation is minimum for:

Discussion

3.	Calculate the rms speed of O2 at 273 K and 1×104 Pa pressure. The density of O2 under these conditions is 1.50 kg m−3.
Answer» Calculate the rms speed of $O_{2}$ at $273 K$ and $1 \times 10^{4} Pa$ pressure. The density of $O_{2}$ under these conditions is $1.50 {kg m}^{- 3}$ .

Discussion

4.	Which of the following is/are neutral oxide(s)?
Answer» Which of the following is/are neutral oxide(s)?

Discussion

5.	Q: FIND WHETHER TRANS OR CIS ISOMER. CH2 = C (COOH)2 ANS : CIS (in book) but I think this compound doesn't shows isomerism if it does , explain.
Answer» Q: FIND WHETHER TRANS OR CIS ISOMER. CH₂ = C (COOH)₂ ANS : CIS (in book) but I think this compound doesn't shows isomerism if it does , explain.

5.

Q: FIND WHETHER TRANS OR CIS ISOMER. CH2 = C (COOH)2 ANS : CIS (in book) but I think this compound doesn't shows isomerism if it does , explain.

Answer»

Q: FIND WHETHER TRANS OR CIS ISOMER.

CH₂ = C (COOH)₂

ANS : CIS (in book)

but I think this compound doesn't shows isomerism

if it does , explain.

Discussion

6.	What is the IUPAC NAME of (CCl3)3CCl ?
Answer» What is the IUPAC NAME of (CCl₃)₃CCl ?

Discussion

7.	SnCl2.2H2O Δ→ ?–+HCl+H2O
Answer» $S n C l_{2} .2 H_{2} O Δ \to ? - + H C l + H_{2} O$

Discussion

8.	What volume of air at STP containing 25% of oxygen by volume is required to completely form carbon dioxide from 2000 g of carbon containing 36% of incombustible matter?
Answer» What volume of air at STP containing 25% of oxygen by volume is required to completely form carbon dioxide from 2000 g of carbon containing 36% of incombustible matter?

Discussion

9.	how many minutes it would take to reduce 2 mol of cu2+ to cu using a current of 10A? Please answer fast. I have exam tomorrow
Answer» how many minutes it would take to reduce 2 mol of cu2+ to cu using a current of 10A? Please answer fast. I have exam tomorrow

9.

how many minutes it would take to reduce 2 mol of cu2+ to cu using a current of 10A? Please answer fast. I have exam tomorrow

Answer»

how many minutes it would take to reduce 2 mol of cu2+ to cu using a current of 10A?

Please answer fast. I have exam tomorrow

Discussion

10.	Calculate the value of proportionality constant k for 1 mole of a gas which occupies 22.4 L of volume under the given conditions of temperature and pressure.
Answer» Calculate the value of proportionality constant $k$ for $1$ mole of a gas which occupies $22.4 L$ of volume under the given conditions of temperature and pressure.

Discussion

11.	What is physical quantitie?
Answer» What is physical quantitie?

Discussion

12.	Which of the following gas shows heating effect in Joule- Thomson experiment? 1)O2 2)CO2 3)H2 4)N2
Answer» Which of the following gas shows heating effect in Joule- Thomson experiment? 1)O2 2)CO2 3)H2 4)N2

Discussion

13.	The correct order of stability of difluoride is:
Answer» The correct order of stability of difluoride is:

Discussion

14.	Question 14 The electronic configurations of the elements A, B and C are given below. Answer the question on the basis of these configurations. A 1s2 2s2 2p6 B 1s2 2s2 2p6 3s2 3p3 C 1s2 2p6 2p6 3s2 3p5 Stable form of A may be represented by the formula (a) A (b) A2 (c) A3 (d) A4
Answer» Question 14 The electronic configurations of the elements A, B and C are given below. Answer the question on the basis of these configurations. A $1 s^{2}$ $2 s^{2}$ $2 p^{6}$ B $1 s^{2}$ $2 s^{2}$ $2 p^{6}$ $3 s^{2}$ $3 p^{3}$ C $1 s^{2}$ $2 p^{6}$ $2 p^{6}$ $3 s^{2}$ $3 p^{5}$ Stable form of A may be represented by the formula (a) A (b) $A_{2}$ (c) $A_{3}$ (d) $A_{4}$

14.

Question 14 The electronic configurations of the elements A, B and C are given below. Answer the question on the basis of these configurations. A 1s2 2s2 2p6 B 1s2 2s2 2p6 3s2 3p3 C 1s2 2p6 2p6 3s2 3p5 Stable form of A may be represented by the formula (a) A (b) A2 (c) A3 (d) A4

Answer»

Question 14

The electronic configurations of the elements A, B and C are given below. Answer the question on the basis of these configurations.

A $1 s^{2}$ $2 s^{2}$ $2 p^{6}$

B $1 s^{2}$ $2 s^{2}$ $2 p^{6}$ $3 s^{2}$ $3 p^{3}$

C $1 s^{2}$ $2 p^{6}$ $2 p^{6}$ $3 s^{2}$ $3 p^{5}$

Stable form of A may be represented by the formula

(a) A

(b) $A_{2}$

(c) $A_{3}$

(d) $A_{4}$

Discussion

15.	Which of the following is a very important component of ceramics?
Answer» Which of the following is a very important component of ceramics?

Discussion

16.	I,II,III are three isotherms respectively at T1,T2 and T3. The temperatures will be in the order:
Answer» $I, I I, I I I$ are three isotherms respectively at $T_{1}, T_{2}$ and $T_{3}$ . The temperatures will be in the order:

Discussion

17.	The pressure under which liquid and vapour can coexist at equilibrium is called the
Answer» The pressure under which liquid and vapour can coexist at equilibrium is called the

Discussion

18.	The diketone CH3−O\|\|C−(CH2)2−O\|\|C−CH3 on intramolecular aldol condensation gives the final product:
Answer» The diketone $C H_{3} - O \| \| C - (C H_{2})_{2} - O \| \| C - C H_{3}$ on intramolecular aldol condensation gives the final product:

Discussion

19.	Saline hydrides are known to react with water violently producing fire. Can CO2, a well known fire extinguisher, be used in this case? Explain.
Answer» Saline hydrides are known to react with water violently producing fire. Can $C O_{2}$ , a well known fire extinguisher, be used in this case? Explain.

Discussion

20.	In the preparation of CaO from CaCO3 using the equilibrium CaCO3(s)⇌CaO(s)+CO2(g)Kp is expressed as log Kp=7.282−8500T for the complete decomposition of CaCO3, the temperature in Celsius to be used is
Answer» In the preparation of CaO from $C a C O_{3}$ using the equilibrium $C a C O_{3} (s) ⇌ C a O (s) + C O_{2} (g) K_{p}$ is expressed as log $K_{p} = 7.282 - \frac{8500}{T}$ for the complete decomposition of $C a C O_{3}$ , the temperature in Celsius to be used is

Discussion

21.	Which is the correct order of ionization energies of the coinage metals.
Answer» Which is the correct order of ionization energies of the coinage metals.

Discussion

22.	The compound YBa2Cu3O7 which shows superconductivity has copper in oxidation state ........ Assume that the rare earth element Yttrium is in its usual +3 oxidation state
Answer» The compound Y $B a_{2} C u_{3} O_{7}$ which shows superconductivity has copper in oxidation state ........ Assume that the rare earth element Yttrium is in its usual +3 oxidation state

22.

The compound YBa2Cu3O7 which shows superconductivity has copper in oxidation state ........ Assume that the rare earth element Yttrium is in its usual +3 oxidation state

Answer»

The compound Y $B a_{2} C u_{3} O_{7}$ which shows superconductivity has copper in oxidation state ........ Assume that the rare earth element Yttrium is in its usual +3 oxidation state

Discussion

23.	Among the following, van der Waals forces are maximum in:
Answer» Among the following, van der Waals forces are maximum in:

Discussion

24.	In an attempted determination of the solubility product constant of TI2S the solubility of this compound in pure CO2− free water was determined as 6.3 × 10−6 mol/L. Assume that the dissolved sulfidehydrolyzes almost completely to HS− and that the further hydrolysis to H2S can be neglected. What is the computed Ksp ?
Answer» In an attempted determination of the solubility product constant of $T I_{2} S$ the solubility of this compound in pure $C O^{2 -}$ free water was determined as $6.3 \times 10^{- 6} m o l / L$ . Assume that the dissolved sulfidehydrolyzes almost completely to $H S^{-}$ and that the further hydrolysis to $H_{2} S$ can be neglected. What is the computed $K_{s p}$ ?

Discussion

25.	Which of the following polymer is a biodegradable polymer?
Answer» Which of the following polymer is a biodegradable polymer?

Discussion

26.	Which oxide is represented by the following structure?
Answer» Which oxide is represented by the following structure?

Discussion

27.	n-Propylbenzene reacts with bromine in presence of light or heat to give
Answer» n-Propylbenzene reacts with bromine in presence of light or heat to give

Discussion

28.	Both acid and base may react with which of the following oxides?
Answer» Both acid and base may react with which of the following oxides?

Discussion

29.	Successive ionization enthalpies of an element 'X' are given below IE1. IE2. IE3. IE4 165. 195. 556. 595 Electronic configuration of the element'X' is?
Answer» Successive ionization enthalpies of an element 'X' are given below IE1. IE2. IE3. IE4 165. 195. 556. 595 Electronic configuration of the element'X' is?

29.

Successive ionization enthalpies of an element 'X' are given below IE1. IE2. IE3. IE4 165. 195. 556. 595 Electronic configuration of the element'X' is?

Answer»

Successive ionization enthalpies of an element 'X' are given below

IE1. IE2. IE3. IE4

165. 195. 556. 595

Electronic configuration of the element'X' is?

Discussion

30.	Which of the following compounds has the maximum molar conductivity?
Answer» Which of the following compounds has the maximum molar conductivity?

Discussion

31.	In the universe two things which does not contain chemistry
Answer» In the universe two things which does not contain chemistry

Discussion

32.	For the reaction, Fe2++3 dipyridyl⇔[Fe(dipyridyl)3]2+rf=1.45×1013[Fe2+][dipyridyl]3rb=1.22×10−4[Fe(dipyridyl)]2+ The stability constant for the complex is
Answer» For the reaction, $F e^{2 +} + 3 d i p y r i d y l \Leftrightarrow [F e (d i p y r i d y l)_{3}]^{2 +} r_{f} = 1.45 \times 10^{13} [F e^{2 +}] [d i p y r i d y l]^{3} r_{b} = 1.22 \times 10^{- 4} [F e (d i p y r i d y l)]^{2 +}$ The stability constant for the complex is

Discussion

33.	Styrene at room temparature is
Answer» Styrene at room temparature is

Discussion

34.	Which of the following salt will have the same value of Van’t Hoff factor as that of Ba3(PO4)2? (Assume 100% dissociation)
Answer» Which of the following salt will have the same value of Van’t Hoff factor as that of $B a_{3} (P O_{4})_{2}$ ? (Assume $100 %$ dissociation)

Discussion

35.	What is prolong in metallargy and its use?
Answer» What is prolong in metallargy and its use?

Discussion

36.	Choose the incorrect among the following
Answer» Choose the incorrect among the following

36.

Choose the incorrect among the following

Answer»

Choose the incorrect among the following

Discussion

37.	As per Arrhenius concept, base is –
Answer» As per Arrhenius concept, base is –

Discussion

38.	Which one of the following aldehyde gives Cannizzaro reaction when heated with strong alkali?
Answer» Which one of the following aldehyde gives Cannizzaro reaction when heated with strong alkali?

Discussion

39.	A piston filled with 0.04 moles of an ideal gas expands reversibly from 50.0 L to 375.0 L at a constant temperature of 37.0∘C. As it does so, it absorbs 208 J of heat energy. The value of work done (in J) for the process will be: (R = 8.314 J/mol K, ln 7.5 = 2.01)
Answer» A piston filled with 0.04 moles of an ideal gas expands reversibly from 50.0 L to 375.0 L at a constant temperature of ${37.0}^{\circ} C$ . As it does so, it absorbs 208 J of heat energy. The value of work done (in $J$ ) for the process will be: (R = 8.314 J/mol K, ln 7.5 = 2.01)

Discussion

40.	0.1 M solution of each of NH3 and NH4Cl are added to prepare a buffer of 1 litre solution. If 0.01 mole of HCl is added (assuming no volume change). The concentrations of NH3 and NH4Cl are
Answer» 0.1 M solution of each of $N H_{3}$ and $N H_{4} C l$ are added to prepare a buffer of 1 litre solution. If 0.01 mole of HCl is added (assuming no volume change). The concentrations of $N H_{3}$ and $N H_{4} C l$ are

Discussion

41.	In which one of the following reactants, Kp is less than Kc?
Answer» In which one of the following reactants, $K_{p}$ is less than $K_{c}$ ?

Discussion

42.	What will be the radius of 64Cu nucleus if the radius of 27Al nucleus is RAl ?
Answer» What will be the radius of $^{64} C u$ nucleus if the radius of $^{27} A l$ nucleus is $R_{A l}$ ?

Discussion

43.	QUESTION 2.21 Two elements A and B form compounds having formula AB2 and AB4. When dissolved in 20 g of benzene (C6H6), 1 g AB2 lowers the freezing point by 2.3 K whereas 1.0 g of AB4 lowers it by 1.3K. The molal depression constant for benzene is 5.1 K kg mol−1. Calculate atomic masses of A and B.
Answer» QUESTION 2.21 Two elements A and B form compounds having formula $A B_{2}$ and $A B_{4}$ . When dissolved in 20 g of benzene $(C_{6} H_{6})$ , 1 g $A B_{2}$ lowers the freezing point by 2.3 K whereas 1.0 g of $A B_{4}$ lowers it by 1.3K. The molal depression constant for benzene is 5.1 K kg $m o l^{- 1}$ . Calculate atomic masses of A and B.

43.

QUESTION 2.21 Two elements A and B form compounds having formula AB2 and AB4. When dissolved in 20 g of benzene (C6H6), 1 g AB2 lowers the freezing point by 2.3 K whereas 1.0 g of AB4 lowers it by 1.3K. The molal depression constant for benzene is 5.1 K kg mol−1. Calculate atomic masses of A and B.

Answer»

QUESTION 2.21

Two elements A and B form compounds having formula $A B_{2}$ and $A B_{4}$ . When dissolved in 20 g of benzene $(C_{6} H_{6})$ , 1 g $A B_{2}$ lowers the freezing point by 2.3 K whereas 1.0 g of $A B_{4}$ lowers it by 1.3K. The molal depression constant for benzene is 5.1 K kg $m o l^{- 1}$ . Calculate atomic masses of A and B.

Discussion

44.	Which of the following compound is used in the manufacturing of soap?
Answer» Which of the following compound is used in the manufacturing of soap?

Discussion

45.	The compound most likely to decolourize a solution of potassium permanganate is
Answer» The compound most likely to decolourize a solution of potassium permanganate is

Discussion

46.	The decreasing order of solubility of silver halides is:
Answer» The decreasing order of solubility of silver halides is:

Discussion

47.	The general formula of double chain silicates is:
Answer» The general formula of double chain silicates is:

Discussion

48.	An alkali metal M reacts with air and products are hydrolysed. If gas obtained turns red litmus into blue then metal M can be:
Answer» An alkali metal $M$ reacts with air and products are hydrolysed. If gas obtained turns red litmus into blue then metal $M$ can be:

Discussion

49.	Select the correct plot of radial probability function for 2s-orbital.
Answer» Select the correct plot of radial probability function for $2 s$ -orbital.

Discussion

50.	2X+B2H6⟶[BH2(X)2]+[BH4]− the amine(s) X is/are:
Answer» $2 X + B_{2} H_{6} ⟶ [B H_{2} (X)_{2}]^{+} [B H_{4}]^{-}$ the amine(s) X is/are:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The difference between orbital angular momentum of an electron in a 4f orbital and another electron in a 4s orbital is:

Heat of hydrogenation is minimum for:

Calculate the rms speed of O2 at 273 K and 1×104 Pa pressure. The density of O2 under these conditions is 1.50 kg m−3.

Which of the following is/are neutral oxide(s)?

Q: FIND WHETHER TRANS OR CIS ISOMER. CH​​​​​2 = C (COOH)2 ANS : CIS (in book) but I think this compound doesn't shows isomerism if it does , explain.

What is the IUPAC NAME of (CCl3)3CCl ?

SnCl2.2H2O Δ→ ?–+HCl+H2O

What volume of air at STP containing 25% of oxygen by volume is required to completely form carbon dioxide from 2000 g of carbon containing 36% of incombustible matter?

how many minutes it would take to reduce 2 mol of cu2+ to cu using a current of 10A? Please answer fast. I have exam tomorrow

Calculate the value of proportionality constant k for 1 mole of a gas which occupies 22.4 L of volume under the given conditions of temperature and pressure.

What is physical quantitie?

Which of the following gas shows heating effect in Joule- Thomson experiment? 1)O2 2)CO2 3)H2 4)N2

The correct order of stability of difluoride is:

Question 14 The electronic configurations of the elements A, B and C are given below. Answer the question on the basis of these configurations. A 1s2 2s2 2p6 B 1s2 2s2 2p6 3s2 3p3 C 1s2 2p6 2p6 3s2 3p5 Stable form of A may be represented by the formula (a) A (b) A2 (c) A3 (d) A4

Which of the following is a very important component of ceramics?

I,II,III are three isotherms respectively at T1,T2 and T3. The temperatures will be in the order:

The pressure under which liquid and vapour can coexist at equilibrium is called the

The diketone CH3−O||C−(CH2)2−O||C−CH3 on intramolecular aldol condensation gives the final product:

Saline hydrides are known to react with water violently producing fire. Can CO2, a well known fire extinguisher, be used in this case? Explain.

In the preparation of CaO from CaCO3 using the equilibrium CaCO3(s)⇌CaO(s)+CO2(g)Kp is expressed as log Kp=7.282−8500T for the complete decomposition of CaCO3, the temperature in Celsius to be used is

Which is the correct order of ionization energies of the coinage metals.

The compound YBa2Cu3O7 which shows superconductivity has copper in oxidation state ........ Assume that the rare earth element Yttrium is in its usual +3 oxidation state

Among the following, van der Waals forces are maximum in:

Which of the following polymer is a biodegradable polymer?

Which oxide is represented by the following structure?

n-Propylbenzene reacts with bromine in presence of light or heat to give

Both acid and base may react with which of the following oxides?

Successive ionization enthalpies of an element 'X' are given below IE1. IE2. IE3. IE4 165. 195. 556. 595 Electronic configuration of the element'X' is?

Which of the following compounds has the maximum molar conductivity?

In the universe two things which does not contain chemistry

For the reaction, Fe2++3 dipyridyl⇔[Fe(dipyridyl)3]2+rf=1.45×1013[Fe2+][dipyridyl]3rb=1.22×10−4[Fe(dipyridyl)]2+ The stability constant for the complex is

Styrene at room temparature is

Which of the following salt will have the same value of Van’t Hoff factor as that of Ba3(PO4)2? (Assume 100% dissociation)

What is prolong in metallargy and its use?

Choose the incorrect among the following

As per Arrhenius concept, base is –

Which one of the following aldehyde gives Cannizzaro reaction when heated with strong alkali?

A piston filled with 0.04 moles of an ideal gas expands reversibly from 50.0 L to 375.0 L at a constant temperature of 37.0∘C. As it does so, it absorbs 208 J of heat energy. The value of work done (in J) for the process will be: (R = 8.314 J/mol K, ln 7.5 = 2.01)

0.1 M solution of each of NH3 and NH4Cl are added to prepare a buffer of 1 litre solution. If 0.01 mole of HCl is added (assuming no volume change). The concentrations of NH3 and NH4Cl are

In which one of the following reactants, Kp is less than Kc?

What will be the radius of 64Cu nucleus if the radius of 27Al nucleus is RAl ?

Which of the following compound is used in the manufacturing of soap?

The compound most likely to decolourize a solution of potassium permanganate is

The decreasing order of solubility of silver halides is:

The general formula of double chain silicates is:

An alkali metal M reacts with air and products are hydrolysed. If gas obtained turns red litmus into blue then metal M can be:

Select the correct plot of radial probability function for 2s-orbital.

2X+B2H6⟶[BH2(X)2]+[BH4]− the amine(s) X is/are:

Q: FIND WHETHER TRANS OR CIS ISOMER. CH2 = C (COOH)2 ANS : CIS (in book) but I think this compound doesn't shows isomerism if it does , explain.